EP0917003A1 - Méthode pour la fabrication d'écrans et appareil à cet effet - Google Patents

Méthode pour la fabrication d'écrans et appareil à cet effet Download PDF

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Publication number
EP0917003A1
EP0917003A1 EP97402735A EP97402735A EP0917003A1 EP 0917003 A1 EP0917003 A1 EP 0917003A1 EP 97402735 A EP97402735 A EP 97402735A EP 97402735 A EP97402735 A EP 97402735A EP 0917003 A1 EP0917003 A1 EP 0917003A1
Authority
EP
European Patent Office
Prior art keywords
screen
laser beam
accordance
ultraviolet laser
fabricating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97402735A
Other languages
German (de)
English (en)
Inventor
You Hie Han
Jeong Suh
In Woong Kim
Jeong Ho Park
Jeong O. Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Machinery and Materials KIMM
Original Assignee
Korea Institute of Machinery and Materials KIMM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1019960039270A priority Critical patent/KR0161640B1/ko
Priority to CA002218830A priority patent/CA2218830A1/fr
Application filed by Korea Institute of Machinery and Materials KIMM filed Critical Korea Institute of Machinery and Materials KIMM
Priority to EP97402735A priority patent/EP0917003A1/fr
Priority to CNB971218218A priority patent/CN1139846C/zh
Publication of EP0917003A1 publication Critical patent/EP0917003A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/12—Production of screen printing forms or similar printing forms, e.g. stencils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing

Definitions

  • the present invention relates to a method for fabricating screens and an apparatus carrying out the method, and more particularly to a screen fabricating method capable of achieving an easy fabrication of screens and reducing the fabrication time while achieving an improvement in the resolution of patterns obtained.
  • the present invention also relates to an apparatus for effectively carrying out the screen fabricating method.
  • Fabrics are printed with desired patterns by locally supplying dyes to those fabrics.
  • Such a printing is carried out using a rotary screen printing method or a flat screen printing method.
  • rotary screen printing method patterns are formed on fabrics in a continuous manner.
  • flat screen printing method patterns are formed on fabrics in an intermittent manner.
  • Both the printing methods use a porous screen formed with a desired pattern. In such a porous screen, a portion of pores not to be supplied with dyes is blocked by a resin while a portion of pores to be supplied with dyes is maintained as it is. Accordingly, dyes are selectively supplied to fabrics through the open pores of the screen.
  • rotary screen printing method used for a continuous printing a cylindrical drum formed by a thin metal plate is typically used. The cylindrical drum has a plurality of pores.
  • Methods for patterning such a rotary screen drum include a photoresist method using a photosetting film and a method using CO 2 -laser beams.
  • FIG. 1 processes for fabricating screens respectively using the above-mentioned rotary screen drum patterning methods are illustrated.
  • the portion A shows a process for fabricating screens in accordance with the CO 2 -laser beam method
  • the portion B shows a process for fabricating screens in accordance with the photoresist method.
  • the screen fabricating method using CO 2 -laser beams has advantages and disadvantages as compared with the screen fabricating method using photosetting films. Such advantages and disadvantages are shown in the following Table 1. Advantages and Disadvantages of Screen Fabricating Method Using CO 2 -Laser Beams as Compared to Screen Fabricating Method Using Photosetting Films Advantage 1. Elimination of Film Fabricating Process 2. Reduction in Screen Fabrication Time Disadvantage 1. Increase in Installation Costs of Screen Fabricating System 2. Degradation in Resolution
  • a photosetting film fabrication process which involves the steps of optically transferring a pattern formed using a computer-aided design (CAD) onto a film and developing the patterned film.
  • CAD computer-aided design
  • the screen fabricating method using CO 2 -laser beams has an advantage in that no film fabrication process used in the screen fabricating method using photosetting films is required because the pattern of a screen is formed using CO 2 -laser beams.
  • this method also has disadvantages in an increase in the installation costs and a degradation in the resolution of finally obtained patterns. This will be described in more detail.
  • the present invention has been made in view of the above-mentioned problems involved in the conventional screen fabricating methods, and an object of the invention is to provide a screen fabricating method capable of easily fabricating a screen having a pattern exhibiting a high resolution without using any film fabricating process involving an increase in the installation costs.
  • Another object of the invention is to provide an apparatus for efficiently carrying out the above-mentioned screen fabricating method, which apparatus is inexpensive and easy in use while being used not only in the fabrication of rotary screens, but also in the regeneration of used screens.
  • the present invention provides a method for fabricating a screen, comprising the steps of: coating a photosetting resin over a screen to be formed with a desired pattern; setting a portion of the photosetting resin corresponding to the pattern using an ultraviolet laser beam; cleaning the screen; and re-setting the photosetting resin.
  • the ultraviolet laser beam for setting the photosetting resin coated over the screen may be an argon ion laser beam or a helium-cadmium laser beam.
  • the screen may be a rotary screen adapted to form patterns on fabrics in a continuous manner or a flat screen adapted to form patterns on fabrics in an intermittent manner.
  • the screen may be regenerated by burning the thermosetting resin coated on the screen using a CO 2 -laser beam.
  • the present invention provides an apparatus for fabricating a screen, comprising: a screen coated with a photosetting resin and adapted to have a desired pattern; an ultraviolet laser beam generating unit for generating an ultraviolet laser beam adapted to set the photosetting resin on the screen; an A/O modulator for shielding or opening a path for the ultraviolet laser beam; and a beam feeding and focusing unit for feeding the ultraviolet laser beam to the screen and focusing the fed ultraviolet laser beam on the screen.
  • the screen fabricating apparatus includes no vibration damping device adapted to fix a surface of the screen at a focused position since the ultraviolet laser beam used has a small focus size while exhibiting a great depth of focus.
  • the screen fabricating apparatus includes no vibration damping device, it is capable of obtaining a pattern having a high resolution.
  • the screen may be a rotary screen adapted to form patterns on fabrics in a continuous manner.
  • the screen fabricating apparatus further comprises a CO 2 -laser beam generating unit.
  • the ultraviolet laser beam and CO 2 -laser beam are sequentially applied to the beam feeding and focusing unit so that both the pattern forming function and screen regenerating function are obtained.
  • the screen fabricating apparatus further comprises a desired number of laser beam guide mirrors arranged downstream from the CO 2 -laser beam generating unit adapted to guide the laser beam in a desired direction.
  • the screen fabricating apparatus may further comprise a flat screen adapted to form patterns on fabrics in an intermittent manner.
  • the screen fabricating apparatus further comprises a beam switching box arranged downstream from the A/O modulator in a continuous manner.
  • the beam switching box reflects a laser beam emerging from the A/O modulator.
  • the screen fabricating apparatus further comprises a mirror control unit adapted to control the laser beam guide mirrors in such a manner that the reflected beam is irradiated onto the flat screen.
  • the laser beam is controlled to pass through the beam switching box.
  • an ultraviolet laser beam is used in place of a CO 2 -laser beam in accordance with the present invention, it is possible to eliminate the problems involved in the case using the CO 2 -laser beam. This is because the ultraviolet laser beam is focused in the form of a fine point by virtue of its small focus size. The ultraviolet laser beam is also hardly influenced by vibrations generated during a high-speed rotation of the screen.
  • FIG. 2 illustrates the relationship among wavelength, length of focus, diameter of focus and depth of focus established where an argon ion laser beam (mainly, having a wavelength of 351 nm) is used as the ultraviolet laser beam to set the photosetting resin coated over the screen.
  • the reference character “L” represents a focusing lens, " ⁇ ” the wavelength of a laser beam used, “F” the distance of focus formed, “b” the depth of focus, “ ⁇ 1 " the diameter of the beam, and “ ⁇ 2 " the diameter of focus, respectively.
  • Respective data about CO 2 -laser and ion laser beams are shown in the following Table 2: Comparison between CO 2 -Laser and Ion Laser Beams ⁇ ( ⁇ m) F(mm) ⁇ 1 (mm) ⁇ 2 ( ⁇ m) b( ⁇ m) CO 2 -Laser Beam 10.6 63.5 15 114 483 0.351 63.5 2 28 901 Ar Ion laser Beam 0.351 127 2 56 3,605 0.351 254 2 112 14,423
  • a focusing lens having a long focus length F of 254 mm should be used in the case using the argon ion laser beam.
  • a focusing lens having a short focus length F of 63.5 mm can be used to obtain a focus diameter of 112 ⁇ m in the case using the CO 2 -laser beam.
  • a focus depth of 438 ⁇ m is obtained.
  • a focus depth of 14,324 ⁇ m is obtained which corresponds to about 30 times the focus depth obtained in the case using the CO 2 -laser beam.
  • FIG. 3 is a flow chart illustrating sequential steps of the screen fabricating method using ultraviolet laser beams in accordance with the present invention.
  • the method of the present invention is applicable to both the rotary screen and flat screen.
  • a photosetting resin is coated over a screen.
  • the coated photosetting resin is selectively set using an ultraviolet laser beam at its portion corresponding to a desired pattern designed in accordance with, for example, a CAD.
  • the screen is then subjected to a cleaning process so as to remove the set portion of the photosetting resin.
  • a portion of pores not to be supplied with dyes is blocked by the resin while a portion of pores to be supplied with dyes is maintained as it is.
  • the portion of the resin not set may be removed. After completing the cleaning process, the resin left on the screen is set again. Thus, the fabrication of the screen is completed. Using the fabricated screen, desired patterns can be formed on fabrics. Where the screen is required to be used no longer, its resin is burned using a CO 2 -laser beam. Accordingly, the screen is regenerated for its future use.
  • FIG. 4 illustrates an apparatus for fabricating screens in accordance with the method of the present invention.
  • FIG. 5 illustrates a beam feeding and focusing unit included in the apparatus of FIG. 4.
  • the portion A shows a rotary engraving device included in the screen fabricating apparatus and adapted to fabricate rotary screens whereas the portion B shows a flat screen fabricating device included in the screen fabricating apparatus to fabricate flat screens.
  • a laser beam in particular, an ultraviolet laser beam, which is generated from an argon ion laser beam generating unit 7, passes through a beam switching box 5 via an A/O modulator 6.
  • the laser beam emerging from the beam switching box 5 enters a rotary engraving rotating unit 3.
  • the laser beam passes through a beam feeding and focusing unit 4 so that it is focused onto the surface of a rotary screen 12 disposed in the rotary engraving rotating unit 3.
  • the rotary screen 12 which is coated with a photosetting resin, rotates at a high speed of about 1,200 rpm.
  • the A/O modulator 6 is controlled by a controller 11 in accordance with CAD data.
  • the CAD data is denoted by the reference numeral "10".
  • the controller 11 operatively connects the CAD data 10 to the rotated position of the rotary screen 12 and controls the A/O modulator 6 to open or shield the path of the laser beam in accordance with the rotated position of the rotary screen 12. Accordingly, the photosetting resin coated over the surface of the screen is selectively set to form a desired pattern. After the setting of the photosetting resin, the screen is subjected to a cleaning process and a re-setting process. Thus, the fabrication of the rotary screen is completed.
  • a CO 2 -laser beam 1 is used.
  • the CO 2 -laser beam 1 is reflected by a desired number of laser beam guide mirrors 2 arranged in the rotary engraving device.
  • the reflected beam is then fed to the surface of the screen via the beam feeding and focusing unit 4.
  • the beam is then focused onto the surface of the screen, so that it removes the coated resin by virtue of its beam energy.
  • the screen is regenerated for its future use.
  • the screen fabricating apparatus of the present invention includes a CO 2 -laser beam generating unit. As the ultraviolet laser beam and CO 2 -laser beam are sequentially applied to the beam feeding and focusing unit, both the pattern forming function and screen regenerating function are obtained.
  • the argon ion laser beam generating unit 7 can be selectively used for the rotary engraving device and flat screen fabricating device.
  • the laser beam generated from the argon ion laser beam generating unit 7 is reflected 90° by a mirror arranged in the beam switching box 5 after passing through the A/O modulator 6, so that it enters a mirror control unit 8. Thereafter, the laser beam is irradiated onto a flat screen 9 by the mirror control unit 8.
  • the A/O modulator 6 and mirror control unit 8 is controlled in accordance with the CAD data 10 so that the laser beam is irradiated onto the flat screen 9 in a controlled manner, thereby selectively setting a photosetting resin coated over the flat screen 9.
  • the screen is subjected to a cleaning process and a re-setting process.
  • the fabrication of the flat screen is completed.
  • the ultraviolet laser beam is selectively used for the rotary engraving device and flat screen fabricating device. Accordingly, the use rate of the laser beam increases, thereby maximizing the efficiency of the laser beam.
  • the present invention is advantageous in terms of the problem associated with vibrations generated during the rotation of the rotary screen.
  • it is possible to form patterns having a high resolution without using any additional vibration damping device for fixing the surface of the rotary screen at a focused position.
  • the present invention provides a screen fabricating method which requires no film fabricating process involving an increase in the installation costs, thereby being capable of achieving an easy fabrication of screens and reducing the fabrication time while achieving an improvement in the resolution of patterns obtained.
  • the present invention completely eliminates disadvantages involved in conventional methods using CO 2 -laser beams.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Overhead Projectors And Projection Screens (AREA)
EP97402735A 1996-09-11 1997-11-14 Méthode pour la fabrication d'écrans et appareil à cet effet Withdrawn EP0917003A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960039270A KR0161640B1 (ko) 1996-09-11 1996-09-11 스크린의 제판방법 및 이를 수행하기 위한 장치
CA002218830A CA2218830A1 (fr) 1996-09-11 1997-11-12 Methode de fabrication d'ecrans et equipement pour mettre en oeuvre cette methode
EP97402735A EP0917003A1 (fr) 1996-09-11 1997-11-14 Méthode pour la fabrication d'écrans et appareil à cet effet
CNB971218218A CN1139846C (zh) 1996-09-11 1997-11-28 制作丝网的设备

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1019960039270A KR0161640B1 (ko) 1996-09-11 1996-09-11 스크린의 제판방법 및 이를 수행하기 위한 장치
CA002218830A CA2218830A1 (fr) 1996-09-11 1997-11-12 Methode de fabrication d'ecrans et equipement pour mettre en oeuvre cette methode
EP97402735A EP0917003A1 (fr) 1996-09-11 1997-11-14 Méthode pour la fabrication d'écrans et appareil à cet effet
CNB971218218A CN1139846C (zh) 1996-09-11 1997-11-28 制作丝网的设备

Publications (1)

Publication Number Publication Date
EP0917003A1 true EP0917003A1 (fr) 1999-05-19

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ID=31721542

Family Applications (1)

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EP97402735A Withdrawn EP0917003A1 (fr) 1996-09-11 1997-11-14 Méthode pour la fabrication d'écrans et appareil à cet effet

Country Status (4)

Country Link
EP (1) EP0917003A1 (fr)
KR (1) KR0161640B1 (fr)
CN (1) CN1139846C (fr)
CA (1) CA2218830A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909520A1 (de) * 1999-03-04 2000-09-07 Mhm Sales & Service Spartanbur Verfahren und Vorrichtung zum Wiederverwerten einer Siebdruckschablone
EP1800862A2 (fr) 2005-12-24 2007-06-27 Josef Lindthaler Procédé et dispositif pour l'irradiation d'un pochoir pour l'impression sérigraphique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104238254B (zh) * 2013-06-20 2016-08-17 北京丰信达科技有限公司 一种显示屏制作方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011116A1 (fr) * 1988-05-05 1989-11-16 Andersen Allan V Systeme de balayage servant a l'exposition successive d'une surface a travailler et en particulier a l'exposition aux ultraviolets d'une photoemulsion sur un cadre d'impression serigraphique
EP0423054A2 (fr) * 1989-10-13 1991-04-17 Krause-Biagosch GmbH MÀ©thode de production de plaques d'impression par laser
DE4142887A1 (de) * 1990-12-24 1992-06-25 Ms Servizi Informatici Elektronisches geraet zum gravieren von siebdruckplatten und aehnlichem durch laserstrahl
US5233918A (en) * 1991-12-09 1993-08-10 David Hale Reusable screen printing process and apparatus
WO1993025387A1 (fr) * 1992-06-11 1993-12-23 Zed Instruments Ltd. Tete de gravure
EP0593806A1 (fr) * 1992-10-21 1994-04-27 Schablonentechnik Kufstein Aktiengesellschaft Procédé pour la fabrication d'un écran de sérigraphie
EP0692741A1 (fr) * 1994-07-14 1996-01-17 Schablonentechnik Kufstein Aktiengesellschaft Dispositif de fabrication pour écran sérigraphique
EP0762212A1 (fr) * 1995-09-06 1997-03-12 Schablonentechnik Kufstein Aktiengesellschaft Procédé pour fabriquer un écran de sérigrapie

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011116A1 (fr) * 1988-05-05 1989-11-16 Andersen Allan V Systeme de balayage servant a l'exposition successive d'une surface a travailler et en particulier a l'exposition aux ultraviolets d'une photoemulsion sur un cadre d'impression serigraphique
EP0423054A2 (fr) * 1989-10-13 1991-04-17 Krause-Biagosch GmbH MÀ©thode de production de plaques d'impression par laser
DE4142887A1 (de) * 1990-12-24 1992-06-25 Ms Servizi Informatici Elektronisches geraet zum gravieren von siebdruckplatten und aehnlichem durch laserstrahl
US5233918A (en) * 1991-12-09 1993-08-10 David Hale Reusable screen printing process and apparatus
WO1993025387A1 (fr) * 1992-06-11 1993-12-23 Zed Instruments Ltd. Tete de gravure
EP0593806A1 (fr) * 1992-10-21 1994-04-27 Schablonentechnik Kufstein Aktiengesellschaft Procédé pour la fabrication d'un écran de sérigraphie
EP0692741A1 (fr) * 1994-07-14 1996-01-17 Schablonentechnik Kufstein Aktiengesellschaft Dispositif de fabrication pour écran sérigraphique
EP0762212A1 (fr) * 1995-09-06 1997-03-12 Schablonentechnik Kufstein Aktiengesellschaft Procédé pour fabriquer un écran de sérigrapie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909520A1 (de) * 1999-03-04 2000-09-07 Mhm Sales & Service Spartanbur Verfahren und Vorrichtung zum Wiederverwerten einer Siebdruckschablone
EP1800862A2 (fr) 2005-12-24 2007-06-27 Josef Lindthaler Procédé et dispositif pour l'irradiation d'un pochoir pour l'impression sérigraphique
EP1800862A3 (fr) * 2005-12-24 2007-12-12 Josef Lindthaler Procédé et dispositif pour l'irradiation d'un pochoir pour l'impression sérigraphique

Also Published As

Publication number Publication date
CN1139846C (zh) 2004-02-25
KR0161640B1 (ko) 1999-05-01
CA2218830A1 (fr) 1999-05-12
CN1218916A (zh) 1999-06-09
KR19980020695A (ko) 1998-06-25

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